Am no to Cosford at the moment, thanks, MrNosy2.
Am a habitue of the Hatfield museum's HS 121 2E. Am sure I've flown it many times, too (flew the Trident 2 as a pax at least 17 times in the 70s and 80s - which ages me) but haven't got onto them for info... Darn! Thanks, Hipper!